import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import User from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'
import Edit from '../components/goods/Edit.vue'

Vue.use(VueRouter)


const router = new VueRouter({
  routes : [
    // redirect重定向访问地址到/login
    {path: '/',redirect: '/login'},
    {path: '/login',component: Login},
    {
      path: '/home',
      component: Home,
      redirect: '/welcome', 
      children:[
        {path: '/welcome', component: Welcome},
        {path: '/users', component: User},
        {path: '/rights', component: Rights},
        {path: '/roles',component: Roles},
        {path: '/categories',component: Cate},
        {path: '/params', component: Params},
        {path:'/goods', component: List},
        {path: '/goods/add', component: Add},
        {path: '/goods/edit/:id', component: Edit},
        {path: '/orders', component: Order},
        {path: '/reports', component: Report}
      ]
    }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to,from,next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  // next() 放行  next('/login') 强制跳转
  if(to.path === '/login') next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})

export default router
